Which of the Following Contributed to the Success of Martin

Which of the following contributed to the success of Martin Luther's reform efforts?

A) Luther did not need political support and, therefore, was able to develop his ideas without political interference.
B) Luther understood the power of the new printing press and authorized the publication of his works.
C) Luther led a unified reform movement that was able to coordinate its actions in several different territories and kingdoms.
D) Luther's status as a nobleman brought him respect and legitimacy that he could use to defend his ideas.